Hee-Hwan Ryu 
- : Development of Grouting Quality Evaluation System for a Shield TBM Tunnel Using the Impact-Echo Method. In: KSCE Journal of Civil Engineering.
- (2017): Anomaly Prediction Ahead Tunnel Face Using Tunnel Electrical Resistivity Prospecting System (TEPS) in Danyang. In: Procedia Engineering, v. 191 ( 2017).
- (2021): A Newly Developed State-of-the-Art Full-Scale Excavation Testing Apparatus for Tunnel Boring Machine (TBM). In: KSCE Journal of Civil Engineering, v. 25, n. 12 (September 2021).
- (2020): Probabilistic Rock Mass Rating Estimation Using Electrical Resistivity. In: KSCE Journal of Civil Engineering, v. 24, n. 7 (June 2020).
- (2014): 뒷채움 주입 거리에 따른 전력구 쉴드 TBM 터널의 거동 특성 분석 (Analysis on the behavior of shield TBM cable tunnel: The effect of the distance of backfill grout injection from the end of skin plate). In: Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집), v. 16, n. 2 ( 2014).
- (2013): Probabilistic rock mass classification using electrical resistivity - Theoretical approach of relationship between RMR and electrical resistivity-. In: Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집), v. 15, n. 2 ( 2013).
- (2015): 이상대 판정기법을 활용한 지하매설물 탐사 (Exploration of underground utilities using method predicting an anomaly). In: Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집), v. 17, n. 3 (31 May 2015).
- (2014): Probabilistic relationship between Q-value and electrical resistivity. In: KSCE Journal of Civil Engineering, v. 18, n. 3 (March 2014).
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